Tests Flat Comments.

CommentFlatTest.php

<?php

namespace Drupal\comment\Tests;

use Drupal\comment\CommentManagerInterface;

/**
 * Tests to make sure the comment number increments properly.
 *
 * @group comment
 */
class CommentFlatTest extends CommentTestBase {
  /**
   * Tests the comment threading.
   */
  public function testCommentFlatDelete() {
    // Set comments to have a subject with preview disabled.
    $this->drupalLogin($this->adminUser);
    $this->setCommentPreview(DRUPAL_DISABLED);
    $this->setCommentForm(TRUE);
    $this->setCommentSubject(TRUE);
    $this->setCommentSettings('default_mode', CommentManagerInterface::COMMENT_MODE_FLAT, 'Comment paging changed.');

    // Create a node.
    $this->node = $this->drupalCreateNode(['type' => 'article', 'promote' => 1, 'uid' => $this->adminUser->id()]);

    // Post comment #1.
    $subject_text = $this->randomMachineName();
    $comment_text = $this->randomMachineName();

    $comment1 = $this->postComment($this->node, $comment_text, $subject_text, TRUE);
    // Confirm that the comment was created and has the correct threading.
    $this->assertTrue($this->commentExists($comment1), 'Comment #1. Comment found.');

    // Reply to comment #1 creating comment #1_2.
    $this->drupalGet('comment/reply/node/' . $this->node->id() . '/comment/' . $comment1->id());
    $comment1_2 = $this->postComment(NULL, $this->randomMachineName(), '', TRUE);

    // Confirm that the comment was created and is not in a thread.
    $this->assertTrue($this->commentExists($comment1_2, FALSE), 'Comment #1_2. Reply found.');

    // Reply to comment #1_2 creating comment #1_2_3.
    $this->drupalGet('comment/reply/node/' . $this->node->id() . '/comment/' . $comment1_2->id());
    $comment1_2_3 = $this->postComment(NULL, $this->randomMachineName(), $this->randomMachineName(), TRUE);
    // Confirm that the comment was created and is not in a thread.
    $this->assertTrue($this->commentExists($comment1_2_3, FALSE), 'Comment #1_2_3. Second reply found.');

    // Delete the first comment.
    $this->deleteComment($comment1);
    // Confirm that the rest of the comments are still there.
    $this->assertTrue($this->commentExists($comment1_2_3, FALSE), 'Comment #1_2_3. Second reply found.');
    $this->assertTrue($this->commentExists($comment1_2, FALSE), 'Comment #1_3. Reply found.');

  }

}